Sri cdti 120, sounds like i have a dump valve fitted

**MistyMorning** · 21st January 2011, 17:35

hey guys, first cdti engined vaux i had but when i let off the accelerator it sounds like a dump valve, also induction is really loud?

Also high pitched wining??? vaux reckon its the tyres?

any thoughts?

**cont1204** · 21st January 2011, 17:41

Does the whine change with speed? Get the bonnet up and make sure everything is done up properly, including the hose from the front grill to the airbox. I'm not sure how loud the recirculating dump valve is on the CDTi's but it's very loud on my 2.2 DTi.

**MistyMorning** · 21st January 2011, 19:31

yeah it gets louder with speed??? its really annoying!!!

**steve19cdti** · 21st January 2011, 19:45

i had that with my 1.9 cdti 120 on 54plate done 98k it was the turbo on its way to poping mean did

lucky for me it was under warranty took them 5 wks to sort out warranty didnt cover the turbo so thay had to fork out

**MistyMorning** · 21st January 2011, 19:55

i hope not!!!! alternator last weekend it really best not be!!!!

**big nath** · 21st January 2011, 21:42

Had the same thing with my 150cdti turn out to be a big hole in the flexi pipe on the front part of the exhaust so turbo was losing pressure. Sounded just like a boy racer with dump valve. Had a new flexi bit welded in for £60 ish.

**Stox** · 21st January 2011, 23:53

same as Big nath ... had the car 3 months and it was making a similar noise... i just got a new flexi pipe on mine last week as noticed it had a leak and its totally cured it. cost me £80. seems to have stopped the diesel fume smell coming into the cabin too :-)